Specifically, what makes the Church catholic is the fact that Christ in his saving mission embraces all humanity. While during his earthly life Jesus’ mission was limited to the Jewish people, “to the lost sheep of the house of Israel” (Mt 15:24), from the beginning it was meant to bring the light of the Gospel to all peoples and lead all nations into the kingdom of God. When he saw the faith of the centurion at Capernaum, Jesus cried out: “I tell you, many will come from east and west and sit at table with Abraham, Isaac, and Jacob in the kingdom of heaven” (Mt 8:11). This universalist perspective can be seen, among other things, from the way Jesus applied to himself not only the title “Son of David”, but also “Son of Man” (Mk10:33), as in the Gospel passage that we have just heard. The expression “Son of Man”, in the language of Jewish apocalyptic literature inspired by the vision of history found in the book of the prophet Daniel (cf. 7:13-14), calls to mind the figure who appears “with the clouds of heaven” (v. 13). This is an image that prophesies a completely new kingdom, sustained not by human powers, but by the true power that comes from God. Jesus takes up this rich and complex expression and refers it to himself in order to manifest the true character of his Messianism: a mission directed to the whole man and to every man, transcending all ethnic, national and religious particularities. And it is actually by following Jesus, by allowing oneself to be drawn into his humanity and hence into communion with God, that one enters this new kingdom proclaimed and anticipated by the Church, a kingdom that conquers fragmentation and dispersal.
[Pope Benedict, address Consistory 24 November 2012]